Do you want to know how much power your car actually produces? Or do you want to check whether your car performs as expected after a modification? With a dyno test, also known as a dynamometer test, you gain insight into your car's performance based on measurements.
At MTR Performance in Rhoon (the Netherlands), we test cars on our Dyno (4x4 dynamometer). This allows us to measure a vehicle's performance, analyze measurement data, and, where necessary, investigate further what lies behind the results.
In this article, you will learn how a dyno test works, what information you can obtain from a dynamometer measurement, and when it is worthwhile to have your car tested.
What is a dyno test?
A dyno test is a measurement in which a car is tested on a dynamometer to gain insight into its performance. The driven wheels turn rollers, while the system collects data on the power and torque produced during the test.
A dynamometer test can be performed for various reasons. For example, you may want to know how much power your car produces, check the results of a modification, or gain more insight into your vehicle's performance.
A dyno test is not intended exclusively for cars that are being tuned. A measurement can also provide valuable information for a standard car, for example if you want to record its current performance as a reference for future modifications.
How does a dyno test work?
During a dyno test, the car is placed on the dynamometer and prepared according to a suitable test procedure. The car is then tested under controlled conditions while the system records the relevant measurement data.
At MTR Performance, we use a Dyno (4x4 dynamometer) at our workshop in Rhoon (the Netherlands).
A dyno test generally consists of the following steps:
1. Preparing the car: Before the measurement begins, it is important to take the car's technical condition, configuration, and the conditions under which the test is performed into account. The car must be suitable for the planned test.
2. Measurement on the dynamometer: The car is tested on the dynamometer. The system records data that can be used to assess performance during the test.
3. Analysis of the results: After the measurement, the results are reviewed. The power and torque curves provide insight into how performance develops during the test.
4. Follow-up steps if necessary: Depending on the reason for the test, the results can be used as a basis for further diagnosis, comparison with a previous measurement, or evaluation of modifications carried out stage tuning or other modifications.
The precise test procedure depends on the vehicle and the purpose of the measurement.
What do you measure during a dyno test?
A rolling-road test can provide more insight than just the maximum power. The information available depends on the equipment used, the connected measuring instruments, and the test setup.
1. Power (hp)
Power indicates how much work an engine can deliver in a given amount of time. For cars, this is often expressed in horsepower.
The measured power can help assess a car's performance and compare measurements before and after a modification. It is important to know whether the reported value refers to power at the wheels or a calculated value for engine power.
2. Torque (Nm)
Torque indicates how much rotational force is delivered. It plays an important role in how a car accelerates and how the power delivery feels.
A torque curve shows how torque develops across the tested RPM range. This means you can look beyond the highest figure and also assess where the car delivers its pulling power.
3. The power and torque curve
The graph from a dyno test shows how power and torque develop during the measurement.
A peak value does not tell the whole story. The shape of the curves is also relevant: where does the power build up, how does the torque behave, and are there any notable changes during the measurement?
The graph must always be interpreted in the context of the vehicle, the test conditions, and the measurement method used.
4. Additional engine data
Depending on the test setup, additional data may also be recorded or read out, such as boost pressure, intake temperature, lambda values, and certain ECU parameters via ECU & TCU software.
This data can help provide a better understanding of performance. However, it is not automatically available with every dyno test, and a rolling-road measurement alone does not always provide a definitive answer about the cause of a technical problem.
When is a dyno test useful for your car?
There are various situations in which a dyno test can be valuable.
After chip tuning or other modifications
Have you had your car's software modified or installed hardware such as a different turbo, intake, or intercooler? A dyno test can then help compare performance before and after the modification.
At MTR Performance, we combine ECU and TCU tuning always with dyno validation - so that the results are based not on assumptions, but on measurement data from your specific car.
The results provide insight into the effect of the changes under the conditions in which the tests were performed. To make a fair comparison, it is important to keep the measurement method and test conditions as consistent as possible.
When you want to know the actual power
Factory figures, previous dyno results and online power claims do not always show what your specific car produces under particular test conditions.
A measurement gives you a clearer picture of your vehicle's performance. View our projects for examples of dyno results from our own cars.
If you have doubts about your car's performance
Do you feel that your car is performing less well than expected? A dyno test can help map its current performance and provide a starting point for further investigation - in combination with our maintenance & repair service.
For comparing different setups
Are you working on improving your car's performance through different stages? By carrying out measurements in a comparable way, you can compare the results of different configurations side by side.
How do you read dyno test results?
A dyno graph can contain a lot of information, but the highest number is not automatically the most important result.
When assessing the results, pay attention to the following points:
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Maximum power: what is the highest measured or calculated power value?
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Torque curve: how does the torque develop across the tested rev range?
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Power delivery: how does the power build up during the measurement?
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Comparability: are the measurement method, vehicle configuration and conditions comparable to those of an earlier test?
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Additional data: are relevant engine data available that help interpret the results?
A higher peak value is not automatically proof of a better tune. It is important to consider the full graph and the context of the measurement.
Why can dyno results differ?
The same car may not always produce exactly the same result in different measurements. This does not automatically mean that something is wrong with the car or the dynamometer.
Differences may be related to, among other things:
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Measurement method: different dynamometers and calculation methods can produce different values.
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Test conditions: temperature and other conditions can affect the results.
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Vehicle configuration: software and hardware modifications can affect performance.
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Technical condition: maintenance, wear and any technical issues can play a role.
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Test procedure: the way the test is carried out can affect how comparable the results are.
That is why it is advisable not to compare power figures between different test setups without further consideration. Reliable comparisons require consistent measurement methods and a sound interpretation of the results.
Dyno test at MTR Performance in Rhoon
At MTR Performance, the focus is on understanding a car’s actual performance. In our workshop in Rhoon (the Netherlands), we have a Dyno (4x4 dynamometer) for measuring and evaluating vehicle performance.
A dyno test can be a valuable starting point when you want to know what your car produces, assess the effects of stage tuning or want to assess other modifications, or gain more insight into your vehicle’s performance.
Depending on your situation, the measurement results may prompt further diagnosis or optimization through our maintenance & repair service. We look not only at a single peak value, but at the data as a whole and the context of the car.
Would you like to know what a dyno test can reveal about your car? Contact MTR Performance to discuss your situation and the options.
Frequently asked questions about dyno tests
How much does a dyno test for a car cost?
The cost depends on the type of vehicle, the purpose of the test, and the work required. Contact us with MTR Performance for information about the options and associated costs.
How long does a dyno test take?
The time required depends on the vehicle, the preparation, and the purpose of the measurement. A test that only measures performance may require a different approach from a test that also requires additional diagnosis.
Does a dynamometer measure engine power or wheel power?
A dynamometer measures performance at the wheels. Depending on the method used, calculated engine power values may also be reported. It is therefore important to check which value is shown on the printout and how it was determined.
Is a dyno test only needed after chip tuning?
No. A dyno test can also be useful if you want to record the performance of a standard car, compare modifications, or establish a baseline for further research. See our different stages for more information about tuning options.
Can a dyno test detect technical problems?
A dyno test can reveal unusual performance and help gather information for further diagnosis. However, the measurement does not automatically identify the exact cause of a problem. Additional checks through our maintenance & repair service are required.
Where can I have my car tested on a dynamometer in South Holland?
MTR Performance is based in Rhoon (the Netherlands) and has a Dyno (4x4 dynamometer). Contact us to discuss which test is suitable for your car.
Want to know more?
Also see our page about live tests on the 4x4 dyno and discover how measurement data can help you better understand your car’s performance. Or view our projects for real dyno results from our workshop.
